Rubidium

Rubidium,  37Rb
Rb5.JPG
Sifat umum
Nama, simbolrubidium, Rb
Pengucapan/rᵿˈbɪdiəm/ BID-ee-əm
Penampilanputih abu-abu
Rubidium di tabel periodik
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Litium (alkali metal)
Berilium (alkaline earth metal)
Boron (metalloid)
Karbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oksigen (diatomic nonmetal)
Fluor (diatomic nonmetal)
Neon (noble gas)
Natrium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silikon (metalloid)
Fosfor (polyatomic nonmetal)
Belerang (polyatomic nonmetal)
Klor (diatomic nonmetal)
Argon (noble gas)
Kalium (alkali metal)
Kalsium (alkaline earth metal)
Skandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Kromium (transition metal)
Mangan (transition metal)
Besi (transition metal)
Kobalt (transition metal)
Nikel (transition metal)
Tembaga (transition metal)
Seng (transition metal)
Galium (post-transition metal)
Germanium (metalloid)
Arsenik (metalloid)
Selenium (polyatomic nonmetal)
Bromin (diatomic nonmetal)
Kripton (noble gas)
Rubidium (alkali metal)
Stronsium (alkaline earth metal)
Itrium (transition metal)
Zirkonium (transition metal)
Niobium (transition metal)
Molibdenum (transition metal)
Teknesium (transition metal)
Rutenium (transition metal)
Rodium (transition metal)
Paladium (transition metal)
Perak (transition metal)
Kadmium (transition metal)
Indium (post-transition metal)
Timah (post-transition metal)
Antimon (metalloid)
Telurium (metalloid)
Yodium (diatomic nonmetal)
Xenon (noble gas)
Sesium (alkali metal)
Barium (alkaline earth metal)
Lantanum (lanthanide)
Serium (lanthanide)
Praseodimium (lanthanide)
Neodimium (lanthanide)
Prometium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Disprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Tulium (lanthanide)
Iterbium (lanthanide)
Lutesium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Renium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Emas (transition metal)
Raksa (transition metal)
Talium (post-transition metal)
Timbal (post-transition metal)
Bismut (post-transition metal)
Polonium (post-transition metal)
Astatin (metalloid)
Radon (noble gas)
Fransium (alkali metal)
Radium (alkaline earth metal)
Aktinium (actinide)
Torium (actinide)
Protaktinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Amerisium (actinide)
Kurium (actinide)
Berkelium (actinide)
Kalifornium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrensium (actinide)
Ruterfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hasium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Kopernisium (transition metal)
Nihonium (unknown chemical properties)
Flerovium (post-transition metal)
Moskovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tenesin (unknown chemical properties)
Oganeson (unknown chemical properties)
K

Rb

Cs
rubidiumstronsium
Nomor atom (Z)37
Golongan, blokgolongan 1 (logam alkali), blok-s
Periodeperiode 5
Kategori unsur  logam alkali
Bobot atom standar (±) (Ar)85.4678(3)
Konfigurasi elektron[Kr] 5s1
per kelopak
2, 8, 18, 8, 1
Sifat fisika
Fasesolid
Titik lebur312.46 K ​(39.31 °C, ​102.76 °F)
Titik didih961 K ​(688 °C, ​1270 °F)
Kepadatan mendekati s.k.1.532 g/cm3
saat cair, pada t.l.1.46 g/cm3
Titik kritis(extrapolated) 2093 K, 16 MPa
Kalor peleburan2.19 kJ/mol
Kalor penguapan75.77 kJ/mol
Kapasitas kalor molar31.060 J/(mol·K)
Tekanan uap
P (Pa)1101001 k10 k100 k
at T (K)434486552641769958
Sifat atom
Bilangan oksidasi1
(oksida basa kuat)
ElektronegativitasSkala Pauling: 0.82
Jari-jari atomempiris: 248 pm
Jari-jari kovalen220±9 pm
Jari-jari van der Waals303 pm
Lain-lain
Struktur kristalkubus acuan badan (bcc)
Struktur kristal Body-centered cubic untuk rubidium
Kecepatan suara batang ringan1300 m/s (suhu 20 °C)
Konduktivitas termal58.2 W/(m·K)
Resistivitas listrik128 n Ω·m (suhu 20 °C)
Arah magnetparamagnetik[1]
Modulus Young2.4 GPa
Modulus Bulk2.5 GPa
Skala Mohs0.3
Skala Brinell0.216 MPa
Nomor CAS7440-17-7
Isotop rubidium terstabil
Iso­topKelim­pahanWaktu paruh (t1/2)Moda peluruhanPro­duk
83Rbsyn86.2 dε83Kr
γ-
84Rbsyn32.9 dε84Kr
β+84Kr
γ-
β84Sr
85Rb72.168%85Rb stabil dengan 48 neutron
86Rbsyn18.65 dβ86Sr
γ-
87Rb27.835%4.88×1010 yβ87Sr
| referensi | di Wikidata

Rubidium adalah suatu unsur kimia dalam tabel periodik yang memiliki lambang Rb dan nomor atom 37.

  • referensi

Referensi

  1. ^ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
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